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UNIVERSITI TUN HUSSEIN ONN MALAYSIA
STATUS CONFIRMATION FOR MASTER'S TmESIS
DESIGN AND DEVELOPMENT OF AN INNOVATIVE APPARATUS FOR
PRODUCING A SPIRAL CATALYST SUBSTRATE FOR CATALYTIC
CONVERTER
ACADEMIC SESSION: 2008/2009
1, MOHD FAHRUL BIN HASSAN, agree to allow this Master's Thesis to be kept at the Library under the following terms:
I. This Master's Thesis is the property of the Universiti Tun Hussein Onn Malaysia. 2. The library has the right to make copies for educational purpose only. 3. The library is allowed to make copies ofthis report for educational exchange between higher
educational institutions. 4. ** Please Mark ("J)
o o lQ]
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Date:
Note:
(Contains information of high security or of great importance to Malaysia as STIPULATED under the OFFICIAL SECRET ACT 1972) (Contains restricted information as determined by the organization! institution where research was conducted
r;Wf-. ([:0. [j;;. DfJ-;~"JiiJ 8[20AVtdlO rOnGynroh Jobotnn l{ojurulr.rnnn Bahan /l. Rel;abonlulc Fnkulll Ko)urutoro<ln I.lohnlkal It P~mbUlJtDr> Unl'Jo~ltI TI'" Husodn Onn Mnloysl:!
Supervisor's Name
Date ____________ _
** Ifthis Master's Thesis is classified as CONFIDENTAL or RESTRlCTED, please attach the letter from the relevant authority/organization stating reasons and duration for such classifications.
This thesis has been examined on date 2 September 2009
and is sufficient in fulfilling the scope and quality for the purpose of awarding the
Degree of Master.
Chairperson:
PROF. IR. DR. SAPARUDIN BIN ARIFIN Faculty of Mechanical and Manufacturing Engineering Universiti Tun Hussein Onn Malaysia
Examiners:
DR. HJ. BADRUL BIN OMAR Faculty of Mechanical and Manufacturing Engineering Universiti Tun Hussein Onn Malaysia
DR.HARYANTISAMEKTO Faculty of Mechanical and Manufacturing Engineering Universiti Tun Hussein Onn Malaysia
DR. ING. ERWIN ZAHARINURCAHYA Implementation Engineer/Consultant Siemens PLM Software GmbH, Germany
DESIGN AND DEVELOPMENT OF AN INNOV ATIVE APPARATUS FOR
PRODUCING A SPIRAL CATAL YST SUBSTRATE FOR CATALYTIC
CONVERTER
MOHD F AHRUL BIN HASSAN
A thesis submitted in
Fulfillment of the requirement for the award of the
Degree of Master of Mechanical Engineering
Faculty of Mechanical and Manufacturing Engineering
Universiti Tun Hussein Onn Malaysia
DECEMBER 2009
"I hereby declare that the work in this thesis is my own except for quotations and
summaries which have been duly acknowledged"
Student
Date
Supervisor
Co Supervisor:
Co Supervisor:
. . 9:., ........................................
M F AI-IRUL BIN HASSAN
0 1/01/:')"'c10 .......................................
ARWIN SEBAYANG
(f~ DR. ING. PUDJI UNTORO
11
111
ACKNOWLEDGEMENT
The author would like to express his sincere appreciations to his supervisor, Prof. Dr.
=Ing. Darwin Sebayang who has given him so much encouragement and invaluable
guidance through out the duration for this research.
A special appreciation to Prof. Kenwichiro Mori from Material Forming
Laboratory, Department of Production System Engineering, Toyohashi University of
Technology, Japan for his kind invitation to his laboratory and helping in solving the
problem. In addition, the author also would like to convey his appreciation to Dr. -
lng. Pudji Untoro, Assoc. Prof. Hj. Mohd Ashraf bin Othman and Mr. Shahrin
Hisham bin Amirnordin for their kind co-operation and positive comments during the
research performed.
Finally, appreciations also go to everyone involved directly or indirectly
towards the compilation of this thesis.
IV
ABSTRACT
Spiral catalyst substrate is one of the substrate types for catalytic converter and has
high geometric surface area. It is to provide support structure in which the washcoat
and the catalyst are applied. Currently, an issue of considerable interest in producing
the substrate from a thin sheet metal with a thiclmess O.l1mm and using FeCrAI
material has become a trend. Existing patented apparatus overseas use a complicated
system and specific details are scarce. Therefore, this research presents the works in
designing and developing an innovative apparatus based on a systematic approach of
Pahl and Beitz's model of design process. Furthermore, Finite Element Method
(Dynaform) was applied for the forming analysis of a trapezoid cell of corrugation on
a thin sheet metal and spiral shape of corrugated sheet metal. These works provide
the conceptual designs for the apparatus of Corrugated Tool for corrugation process
and Spiral Tool for spiral process. The selected conceptual design was established by
developing a model of the apparatus. A rule of thumb for requiring unloaded
diameter of corrugated sheet metal in spiral shape was derived. Forming Limit
Diagram (FLD) shows that the thin sheet metal was successfully formed without any
cracking and Thiclmess Diagram shows that the thiclmess of the formed thin sheet
metal was in safe thickness. The springback effect that occurs during the sheet metal
in spiral shape was solved using the developed casing. The designed apparatus of
Corrugated Tool and Spiral Tool were fabricated and optimization was performed by
producing the spiral catalyst substrate. The innovative apparatus for producing the
full scale of spiral catalyst substrate were successfully designed and developed.
v
ABSTRAK
Spiral catalyst substrate adalah salah satu daripada jenis-jenis substrate yang
digunalcan untuk catalytic converter dan mempunyai luas pennukaan geometri yang
tinggi. Ianya adalah untuk memberi struktur sokongan dimana washcoat dan catalyst
alcan ditempatkan. Pada masa ini, isu"isu yang mendapat perhatian dalam membuat
substrate daripada kepingan logam nipis dengan ketebalan O.llmm dan
menggunalcan bahan FeCrAl telah menjadi kebiasaan. Beberapa alatan sedia ada
yang telah dipatenkan di luar negara menggunakan sistem yang berselirat dan
perincian tidalc diberikan sepenuhnya. Oleh itu, penyelidikan ini mempersembahkan
tugasan dalam merekabentuk dan membangunkan alatan yang inovatif berdasarkan
pendekatan yang sistematik model Pahl dan Beitz's untuk proses merekabentuk
Tambahan pula, Kaedah Unsur Tidak Terhingga (Dynafonn) telah digunapakai
untuk analisis pembentukan alunan sel berbentuk trapezoid pada kepingan logam
nipis dan bentuk lingkaran kepingan logam yang telah dialunkan. Kerja-kerja ini
memberikan gambaran untuk konsep rekabentuk untuk alatan Corrugated Tool untuk
proses alunan dan Spiral Tool untuk proses lingkaran. Konsep rekabentuk yang telah
dipilih dimulalcan dengan membangunkan model alatan tersebut. Rule of thumb
untuk mendapatkan diameter tanpa beban kepingan logam yang telah dialunkan
dalam bentuk lingkaran telah diperolehi. Rajah Pembentukan Tidak Terbatas (FLD)
menunjukan bahawa kepingan logam nipis telah berjaya dibentuk tanpa sebarang
koyak dan Rajah Ketebalan menunjukan bahawa ketebalan kepingan logam yang
dibentuk adalah dalam keadaan selamat. Kesan springback yang berlaku semasa
kepingan logam dalam bentuk lingkaran telah diselesaikan dengan meletakkan spiral
catalyst substrate dalam bekas yang dibuat. Alatan yang telah direkabentuk iaitu
Corrugated Tool dan Spiral Tool dibangunlcan dan kesempurnaan telah dijalankan
dengan memhasilkan spiral catalyst substrate.
VI
CONTENTS
TITLE
DECLARATION ii
ACKNOWLEDGEMENT iii
ABSTRACT iv
CONTENTS vi
LIST OF TABLES xii
LIST OF FIGURES xiv
LIST OF SYMBOLS xix
LIST OF APPENDICES x:xi
CHAPTER 1 INTRODUCTION 1
1.1 Research Background
1.2 Problem Statement 6
1.3 Research Aim 7
1.4 Research Objective 7
1.5 Research Scope 7
1.6 Research Significance 8
CHAPTER 2 LITERATURE REVIEW 9
2.1 Catalyst Substrate Parameter 9
2.1.1 Geometries of Catalyst Substrate 10
2.1.2 Manufacturing of Spiral Catalyst Substrate 11
2.2 Review of Available Patented Apparatus in the
Market 13
2.2.1 Apparatus for Producing a Honeycomb Body 13
2.2.2 Methods for Manufacturing by Heat Treatment
of Metals 14
2.2.3 Multi-point Welding Method 15
2.2.4 Apparatus for Shaping a Spiral Catalyst Support 16
2.2.5 Spiral Catalyst Substrate Produced by the
Previous Invention
2.2.6 The Advantages and Disadvantages of the
Previous Invention
2.3 Fundamental of Fonning Process
2.3.1 Mechanical Behavior of Material
17
18
19
19
V11
2.3.1.1 Tension 19
2.3.1.2 Torsion 23
2.3.2 Sheet Metal Forming Process 24
2.3.2.1 Bending of Sheet and Plate 24
2.3.2.2 Stamping Process 29
2.3.2.3 Formability of Sheet Metals and Modeling 30
2.4 Research Context
CHAPTER 3 METHODOLOGY
3.1 Introduction
3.2 Models of Modern Design Concepts
3.2.1 Systematic Approach ofPahl and Beitz's Model
of Design process
3.2.1.1 Planning and Task Clarification
3.2.1.2 Conceptual Design
3.2.1.3 Embodiment Design
3.2.1.4 Detail Design
3.3 An Overview of Producing Process
3.4 Finite Element Simulation Approach
32
33
33
33
35
36
36
37
38
38
39
Vlll
CHAPTER 4 SYSTEMATIC APPROACH OF DESIGNING
AND DEVELOPING AN INNOVATIVE
APP ARA TUS FOR PRODUCING A SPIRAL
CATALYST SUBSTRATE 41
4.1 Clarification of the Task 41
4.2 Conceptual Design 42
4.2.1 Abstracting to Identify the Essential Problems 43
4.2.2 Establishing Function Structures 44
4.2.3 Searching for Working Principles 45
4.2.4 Combining Working Principles 47
4.2.5 Selecting Working Principles 48
4.2.6 Firming Up into Principle Solution Variants 48
4.2.7 Evaluating Principle Solution Variants 53
4.3 Embodiment Design 56
4.3.1 Preliminary Layout 57
4.3.1.1 Tool and Die for Corrugation Process 57
4.3.1.2 Housing for Corrugation Process 5S
4.3.1.3 Arrangement for Corrugation Process
4.3.1.4 Housing for Spiral Process
IX
4.3.1.5 Twister for Spiral Process
4.3.1.6 Shaper for Spiral Process
4.3.1.7 Arrangement for Spiral Process
4.3.2 Definitive Layout
4.3.2.1 Mechanical properties of the FeCrAl material
4.3.2.2 Tool and Die for Corrugation Process
4.3.2.3 Housing for Corrugation Process
4.3.2.4 Arrangement of Corrugation Process
4.3.2.5 Housing for Spiral Process
4.3.2.6 Twister for Spiral Process
4.3.2.7 Shaper for Spiral Process
4.3.2.8 Arrangement for Spiral Process
4.3.2.9 Selection of Material and Manufacturing
Process
4.3.3 Development of Models for Corrugation
Process and Spiral Process
4.3.3.1 Experimental Test
4.4 Detail Design
x
61
62
63
64
64
69
90
91
92
93
101
104
114
117
118
123
Xl
4.4.1 Corrugated Tool Specifications 123
4.4.2 Spiral Tool Specifications 124
4.4.3 Production Drawing 124
4.4.4 Development of Prototype for Corrugated Tool
and Spiral Tool 125
4.4.4.1 Development of Corrugated Tool 125
4.4.4.2 Development of Spiral Tool 126
4.4.5 Optimization of the Developed Apparatus 126
4.4.5.1 Producing the Spiral Catalyst Substrate 127
CHAPTER 5 CONCLUSION AND RECOMMENDATION 133
5.1 Research Conclusion 133
5.2 Recommendation for Future Works 133
REFERENCES 135
APPENDIX 141
Xll
LIST OF TABLES
2.1 Review of catalyst substrate produced by the previous
Patents 17
2.2 Review of patented apparatus and methods of
manufacturing a spiral catalyst substrate 18
4.1 Summarization of preliminary engineering design 41
4.2 Working principles for corrugation process 46
4.3 Working principles for spiral process 46
4.4 Variant for solution principles of corrugation process 47
4.5 Morphological Matrix for spiral process 47
4.6 Evaluation of three principle solution variants for
corrugation process 54
4.7 Evaluation of three principle solution variants for
spiral process 56
4.8 Mechanical properties of the FeCrAl material 68
4.9 Pinion and driven gear dimension 79
4.10 The torque required in different width of sheet metal 83
4.11 The required power and horsepower in different width
of sheet metal 85
4.12 The input dimensions 95
4.13 Material properties 98
4.14 The summarization of torque required with different
widths and diameters 100
4.15 Selection of materials and manufacturing processes
of tool development for corrugation process 114
4.16 Selection of materials and manufacturing processes
of tool development for Spiral Process 116
4.17 Preparation of the specimens 118
4.18
4.19
Summarization of the result obtained
The result of loaded diameter estimation by using the
generated mle of thumb
4.20 Designed specifications of Cormgated Tool
4.21 Designed specifications of Spiral Tool
122
123
124
124
Xlll
xiv
LIST OF FIGURES
1.1 Catalytic converter in the exhaust line ofvehic1e 2
1.2 Structure of catalytic converter 3
1.3 Catalyst substrate inside of the catalytic converter 3
1.4 Spiral catalyst substrate 4
1.5 The focused are on process development of catalytic
converter 5
1.6 The process of making a sheet metal into a spiral
shape 6
2.1 Parameters of catalyst substrate development 10
2.2 The process of manufacturing a sheet metal into a
spiral shape 12
2.3 Illustration of an apparatus for producing a
honeycomb body 14
2.4 (a) is a side view of an assembly suitable for
processing metal structures according to process of
the invention; (b) is a plan view of an exemplary metal
structure shaped 15
2.5 (a) is an explanatory view showing a forming process
of flat and corrugated sheet metal; (b) is an explanatory
view showing a welding process by electric discharges 16
2.6 (a) is an end view of a metal catalyst support before it
has been flattened, also showing the layers in fragmentary
form; (b) is a side view of the apparatus used in the
method of making the catalyst support of the invention 17
2.7 (a) Original and final shape of a standard tensile-test
specimen. (b) Outline of a tensile4est sequence
showing different stages in the elongation of the
xv
specimen 21
2.8 The stress-strain curve 23
2.9 Sheet Metal Bending process. (a): position part on
the die; (b): position punch on the part; (c): perform
bending; (d): take out the part 25
2.10 Common die bending operations, showing the
die-opening dimension W, used in calculating bending
forces 26
2.11 Examples of various bending operations 27
2.12 Terminology for springback in bending 28
2.13 Springback factor, Ks, for various material.
(a) 2024-0 and 7075-0 aluminum, (b) austenitic
stainless steels, (c) 2024-T aluminum, (d) ~-hard
austenitic stainless steels, and (e) Y2-hard to full hard
austenitic stainless steels 29
2.14 Cross-sectional view of a simple draw die 29
2.15 Diagram showing the relation between punch force
and side-wall tension 30
2.16 Forming limit diagram (FLD) for various sheet metal 31
3.1 Comparison of full phase models of design process 34
3.2 Pahl and Beitz's Model of Design Process 35
3.3 Steps of conceptual design 37
3.4 An overview of producing process of the spiral
catalyst substrate. 39
3.5 The finite element simulation of sheet metal forming
process 40
4.1 The main processes of the designed apparatus 43
4.2 Problem formulation and overall function as per
requirements list for corrugation process 43
4.3 Problem formulation and overall function as per
requirements list for spiral process 44
4.4 Overall function of the corrugation process 44
4.5 Overall function of the spiral process 45
4.6 Variant 1 for corrugation process 48
XVI
4.7 Variant 2 for corrugation process 49
4.8 Variant 3 for corrugation process 50
4.9 Variant 1 for spiral process 50
4.10 Variant 2 for spiral process 51
4.11 Variant 3 for spiral process 52
4.12 Variant 4 for spiral process 52
4.13 Objectives tree for corrugation process 53
4.14 Objectives tree for spiral process 55
4.15 Geometry of the cell shape 58
4.16 Preliminary layout of Tool and Die for corrugation
process 58
4.17 Preliminary layout of Housing for corrugation process 59
4.18 Preliminary layout of corrugation process 60
4.19 Preliminary layout of Housing for spiral process 61
4.20 The preliminary layout of Twister for spiral process 62
4.21 Preliminary layout of Shaper for spiral process 63
4.22 Preliminary layout of spiral process 63
4.23 The dimension of specimen for tensile test 65
4.24 The specimens for tensile test 65
4.25 Machine of tensile test 66
4.26 The stress-strain curve of the sheet metal 66
4.27 Detail layout of Tool and Die module for corrugation
process 69
4.28 Overview of forming procedures and the selected
forming analysis area 70
4.29 The dimensions of the tooling for corrugation process 71
4.30 Modeling setup for forming analysis of corrugation
process 71
4.31 Material of the defined blank part 72
4.32 Boundary condition for corrugation process 73
4.33 The friction and contact for corrugation process 74
4.34 The process condition for corrugation process 75
4.35 Deformed geometry of the Blank 76
4.36 Finite Limit Diagram (FLD) of the Blank 76
xvii
4.37 Thickness of the fonned Blank 77
4.38 The overview of dimensions of gear 78
4.39 Die opening for V -bending on pinion gear 80
4.40 Angle of the gear 81
4.41 Force analysis on pinion gear 81
4.42 Proposed diagram of the shaft 86
4.43 Specification of GMB single-row deep groove ball
bearing 90
4.44 Detail layout of Housing module for corrugation
process 91
4.45 Detail geometry layout of tool development for
corrugation process 91
4.46 Detail layout of Housing module for spiral process 92
4.47 Detail layout of Twister module for spiral process 93
4.48 An overview of torque generated by Twister 94
4.49 The dimensions of the spiral spring design 95
4.50 Entering the input dimensions in FED9 97
4.51 Entering the material characteristics in FED9 storage 98
4.52 The example of result obtained for the first input
dimensions 99
4.53 Graph of torque versus diameter with different widths 100
4.54 Detailed layout of Shaper module for spiral process 102
4.55 Detail geometric layout of tool development for spiral
process 104
4.56 Overview of fonning procedures and the selected
forming analysis area. 105
4.57 The dimensions of the tooling 106
4.58 Modeling setup for fonning analysis of spiral process 106
4.59 Material of the blank part 107
4.60 Boundary condition for spiral process 108
4.61 The friction and contact for spiral process 109
4.62 The process condition for spiral process 110
4.63 Fonning analysis on layer with diameter of20mm 111
4.64 Fonning analysis on layer with diameter of 50mm 112
xviii
4.65 Fonning analysis on layer with diameter of 100mm 113
4.66 Models of the apparatus; (a) Corrugated Tool for
corrugation process; (b) Spiral Tool for spiral process 118
4.67 Corrugation process by the Corrugated Tool 119
4.68 Spiral process by the Spiral Tool 119
4.69 The specimen in the Spiral Tool 120
4.70 Measured the loaded diameter of spiral shape by digital
caliper 120
4.71 The specimens in fully unloaded configuration 121
4.72 Measured the unloaded diameter of spiral shape by
Vertical Profile Projector 121
4.73 Half view of the outer layer of the specimens 122
4.74 The developed apparatus of Corrugated Tool 125
4.75 The developed apparatus of Spiral Tool 126
4.76 Flat thin sheet metal of FeCrAl material 127
4.77 Performing a corrugation process by Corrugated Tool 128
4.78 The corrugated sheet metal of FeCrAI material 128
4.79 Laminating the corrugated sheet metal with the flat
sheet metal 129
4.80 Inserting the laminated sheet metals and clamped at
Twister rod 129
4.81 Performing a spiral process by Spiral Tool 130
4.82 The spiral shape oflaminated sheet metals in requested
diameter 130
4.83 Overview of laminated sheet metal in developed casing 131
4.84 Placing the spiral catalyst substrate in the developed
casing 132
xix
LIST OF SYMBOLS
CO Carbon Monoxide
HC .. Hydrocarbon
NOx Nitrogen Oxide
D ;; Diameter or Die opening
L Length
CpSl ;;; centre per square inch
t Thickness
Ntu ;;; Effective of mass exchanger
00
gml Overall mass transfer
• Mass flow rate of the stream rnG
Au Cross-sectional area
F Force
0' Tension or stress
e ;;; Elongation or nominal strain
Instantaneous
10 ;; Original gauge length
E Modulus of elasticity
K ;;; Strength coefficient
s Strain
n Exponent coefficient
T Torque
't Torsion
r Radius
G ;; Shear modulus
Kbf Friction
TS ;; Tensile strength
xx
w Width
Ri Initial radius
Rr Final radius
Ks Springback factor
Y Yield stress
FLD Forming Limit Diagram
e Angle
Ft .. Angular force
Fr Radial force
P Power
HP Horsepower